Multi-angle adjustable steel framework connecting piece

The utility model relates to the technical field of steel framework connecting pieces, in particular to a multi-angle adjustable steel framework connecting piece which comprises a first steel pipe and a second steel pipe, horizontal calibration mechanisms are arranged above a first mounting plate and a second mounting plate respectively, a length adjusting mechanism is arranged on one side of the first steel pipe, and the length adjusting mechanism is arranged on the other side of the second steel pipe. When the device is used, through the arrangement of the water storage tank, the mounting position of the first mounting plate can be calibrated in time according to the inclination condition of water in the water storage tank when the first mounting plate is mounted, so that the effect of precisely and horizontally mounting a connecting piece is achieved; and meanwhile, the water storage tank can be conveniently disassembled and assembled through the arrangement of the T-shaped block and the T-shaped groove, m